Date: Wed, 20 Oct 2010 13:39:25 -0700 From: Garrett Cooper <gcooper@FreeBSD.org> To: Peter Jeremy <peterjeremy@acm.org> Cc: KOT MATPOCKuH <matpockuh@gmail.com>, FreeBSD Current <freebsd-current@freebsd.org> Subject: Re: [zfs] Mounting from (...) failed with error 19 Message-ID: <AANLkTino7DLY2Cj%2BnAsR1rM9KMEPvoSSxrqqyNDX9jLj@mail.gmail.com> In-Reply-To: <20101020194547.GA94244@server.vk2pj.dyndns.org> References: <4CBCDD3A.9070404@delphij.net> <4CBD26B4.2020205@yandex.ru> <4CBDB17C.4040607@yandex.ru> <AANLkTimhCU%2BppQncCNJicH1AjuM25Z6GH3Jmqckprn=H@mail.gmail.com> <20101020194547.GA94244@server.vk2pj.dyndns.org>
next in thread | previous in thread | raw e-mail | index | archive | help
On Wed, Oct 20, 2010 at 12:45 PM, Peter Jeremy <peterjeremy@acm.org> wrote:
> On 2010-Oct-20 10:50:38 +0400, KOT MATPOCKuH <matpockuh@gmail.com> wrote:
>>> I fixed it with attached patch.
>>Omg... Why You are using strcmp, but not strncmp(fs, "zfs", strlen("zfs"))?
>
> Can you explain why you think it should be strncmp() please.
I'd say that strcmp is perfectly fine because zfs is a 3 character (4
if you count NUL) string. The comparison logic is dang near the same:
/*
* Compare strings.
*/
int
strcmp(const char *s1, const char *s2)
{
while (*s1 == *s2++)
if (*s1++ == '\0')
return (0);
return (*(const unsigned char *)s1 - *(const unsigned char *)(s2 - 1));
}
int
strncmp(const char *s1, const char *s2, size_t n)
{
if (n == 0)
return (0);
do {
if (*s1 != *s2++)
return (*(const unsigned char *)s1 -
*(const unsigned char *)(s2 - 1));
if (*s1++ == '\0')
break;
} while (--n != 0);
return (0);
}
Weird how n == 0 with strcmp returns 0...
-Garrett
Want to link to this message? Use this URL: <https://mail-archive.FreeBSD.org/cgi/mid.cgi?AANLkTino7DLY2Cj%2BnAsR1rM9KMEPvoSSxrqqyNDX9jLj>